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Sibirskite

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Formula:
Ca2(HB2O5)(OH)
System:
Monoclinic
Colour:
Colourless, dark grey ...
Name:
Named after its discovery locality in Siberia (Sibirski in Russian)
Isostructural with:
This page provides mineralogical data about Sibirskite.

Classification of Sibirskite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
6.BC.20

6 : BORATES
B : Diborates
C : Ino-diborates with triangles and/or tetrahedra
25.2.2.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
2 : Diborates
9.3.2

9 : Borates
3 : Borates of Ca and Sr
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Type Occurrence of Sibirskite

Year of Discovery:
1962

Physical Properties of Sibirskite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless, dark grey (when included by chlorite)

Crystallography of Sibirskite

Crystal System:
Monoclinic

Optical Data of Sibirskite

Type:
Biaxial (-)
RI values:
nα = 1.555 nβ = 1.643 nγ = 1.658
2V:
Measured: 43° , Calculated: 42°
Max Birefringence:
δ = 0.103
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemical Properties of Sibirskite

Formula:
Ca2(HB2O5)(OH)
Essential elements:
All elements listed in formula:

Relationship of Sibirskite to other Species

6.BC.10CalciboriteCa(B2O4)
6.BC.15VimsiteCaB2O2(OH)4
6.BC.20ParasibirskiteCa2(B2O5) · H2O
9.3.1CalciboriteCa(B2O4)
9.3.3FabianiteCaB3O5OH
9.3.4UralboriteCa2[B3O3(OH)5 · OB(OH)3]
9.3.5VimsiteCaB2O2(OH)4
9.3.6OlshanskyiteCa2[B3O3(OH)6](OH) · 3H2O
9.3.7FroloviteCa[B(OH)4]2
9.3.8KorzhinskiteCa(B2O4) · H2O
9.3.9TyretskiteCa2B5O9OH · H2O
9.3.10NifontoviteCa3B6O6(OH)12(H2O)2
9.3.12InyoiteCa(H4B3O7)(OH) · 4H2O
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
9.3.14ColemaniteCa[B3O4(OH)3] · H2O
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2O
9.3.16HexahydroboriteCa[B(OH)4]2 · 6H2O
9.3.17MeyerhofferiteCa2(H3B3O7)2 · 4H2O
9.3.18PriceiteCa2B5O7(OH)5 · H2O
9.3.19GinoriteCa2B14O23 · 8H2O
9.3.20ProbertiteNaCaB5O7(OH)4 · 3H2O
9.3.21UlexiteNaCa[B5O6(OH)6] · 5H2O
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
9.3.23InderboriteCaMg(H3B3O7)2 · 8H2O
9.3.24WardsmithiteCa5Mg[B4O7]6 · 30H2O
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4
9.3.26StrontioboriteSrB8O11(OH)4
9.3.27VeatchiteSr2B11O16(OH)5 · H2O
9.3.28Veatchite-ASr2B11O16(OH)5 · H2O
9.3.29 P-Veatchite
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2O
9.3.32Strontioginorite(Sr,Ca)2B14O23 · 8H2O

Other Names for Sibirskite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Sibirskite

Reference List:
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1962) 91: 455.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1996) 125(4): 60-71.

American Mineralogist (1963) 48: 433.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Miura, H. & Kusachi, I. (2008) Journal of Mineralogical and Petrological Sciences, 103, 156-160.

Internet Links for Sibirskite

Localities for Sibirskite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Japan
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
Mineralogical Record: 27: 306.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71; I. Kusachi, Y. Takechi, C. Henmi and S. Kobayashi (1998) Parasibirskite, a New Mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine 62:521-525.
Russia (TL)
 
  • Eastern-Siberian Region
    • Khakassia Republic (Khakassy Republic; Khakassiya Republic)
[AmMin 82:822]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Krasnoturjinsk (Bogolovsk; Krasnotur'insk; Krasnoturyinsk)
          • Turya river
            • Turjinsk
[AmMin 82:822]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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